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Tian H, Huang N, Yao W, Yu H, Yu B, Chen X, Chen C. Comparative transcriptomic analysis of the flavor production mechanism in yogurt by traditional starter strains. J Dairy Sci 2024; 107:5402-5415. [PMID: 38331185 DOI: 10.3168/jds.2023-24328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 01/10/2024] [Indexed: 02/10/2024]
Abstract
The synergistic fermentation of milk by Streptococcus thermophilus and Lactobacillus delbrueckii ssp. bulgaricus is one of the key factors that determines the quality of yogurt. In this study, the mechanism whereby yogurt flavor compounds are produced by a mixture of S. thermophilus SIT-20.S and L. delbrueckii ssp. bulgaricus SIT-17.B were investigated by examining the flavor production, growth, and gene transcription of these strains. The results showed that yogurt produced by a 10:1 mixture of the aforementioned strains had the highest abundance of acetoin, whereas yogurt produced by a 1:1 mixture had the highest abundance of diacetyl and acetaldehyde. In addition, the growth of S. thermophilus SIT-20.S was enhanced in the 10:1 mixture. Transcriptomic analysis revealed differentially expressed genes in the flavor-compound-related pathways of S. thermophilus SIT-20.S and L. delbrueckii ssp. bulgaricus SIT-17.B in yogurts produced by 10:1 and 1:1 mixtures compared with those produced by either strain alone. Mixed fermentations regulated the expression of genes related to glycolysis, resulting in an increase of pyruvate, which is an important precursor for diacetyl and acetoin synthesis. The gene encoding the acetoin reductase (SIT-20S_orf01454) was decreased in S. thermophilus SIT-20.S, which ensured the accumulation of acetoin. In addition, the gene encoding the acetaldehyde dehydrogenase (SIT-20S_orf00949) was upregulated in S. thermophilus SIT-20.S, and the expression of alcohol dehydrogenase (SIT-20S_orf01479; SIT-17B_orf00943) was downregulated in both strains, maintaining the abundance of acetaldehyde. In addition, the gene encoding the NADH oxidase (SIT-17B_orf00860) in L. delbrueckii ssp. bulgaricus SIT-17.B were upregulated, which promoted the accumulation of diacetyl and acetoin. Overall, we characterized the mechanism by which S. thermophilus and L. delbrueckii ssp. bulgaricus synergistically generated yogurt flavor compounds during their production of yogurt and highlighted the importance of appropriate proportions of fermentation starters for improving the flavor of yogurts.
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Affiliation(s)
- Huaixiang Tian
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
| | - Ningwei Huang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
| | - Wenian Yao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
| | - Haiyan Yu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
| | - Benjie Yu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China
| | - Xia Chen
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, Hohhot 010018, People's Republic of China
| | - Chen Chen
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, People's Republic of China.
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2
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Wang N, Ainiwan D, Liu Y, He J, Liu T. Effects of steam explosion-modified rice bran dietary fiber on volatile flavor compounds retention and release of red date-flavored naan (ethnic specialty food of Xinjiang) during storage. Food Chem X 2024; 22:101438. [PMID: 38846796 PMCID: PMC11154202 DOI: 10.1016/j.fochx.2024.101438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/23/2024] [Accepted: 05/02/2024] [Indexed: 06/09/2024] Open
Abstract
This study explored the effects of steam explosion-modified rice bran dietary fiber (S-RBDF) on red date-flavored naan quality and flavor characteristics. The results revealed that the rheological properties of the dough were improved with the incremental addition of S-RBDF (0-5%). The microstructure revealed that adding an appropriate amount of S-RBDF (1-5%) enabled more starch granules to be embedded in the dough network. Notably, the addition of 5% S-RBDF resulted in naan with an optimum specific volume and texture, which consumers preferred. Additionally, gas chromatography-mass spectrometry analysis showed that adding S-RBDF to naan contributed to the retention and sustained release of pleasant volatile compounds (e.g. red date flavor, etc.), while inhibiting the development of unpleasant volatile compounds by delaying the oxidation and decomposition of lipids and preserving the antioxidant phenolic compounds, thus contributing to flavor maintenance of naan during storage. Overall, these results provided a foundation for developing high-quality flavored naan.
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Affiliation(s)
- Nan Wang
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, PR China
- Scientific Research Base of Edible Mushroom Processing Technology Integration of Ministry of Agriculture and Rural Affairs, Changchun 130118, China
- Engineering Research Center of Grain Deep-processing and High-effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Dilinuer Ainiwan
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, PR China
- Engineering Research Center of Grain Deep-processing and High-effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Yingxu Liu
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, PR China
- Engineering Research Center of Grain Deep-processing and High-effeciency Utilization of Jilin Province, Changchun 130118, China
| | - Jialu He
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, PR China
- Scientific Research Base of Edible Mushroom Processing Technology Integration of Ministry of Agriculture and Rural Affairs, Changchun 130118, China
| | - Tingting Liu
- School of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, PR China
- Scientific Research Base of Edible Mushroom Processing Technology Integration of Ministry of Agriculture and Rural Affairs, Changchun 130118, China
- Engineering Research Center of Grain Deep-processing and High-effeciency Utilization of Jilin Province, Changchun 130118, China
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3
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Mietton L, Mata-Orozco J, Guezenec S, Marlin T, Samson MF, Canaguier E, Godet T, Nolleau V, Segond D, Cassan D, Baylet M, Bedouelle P, Bonnel L, Bouquin H, Christin G, Courteau M, Doucoure M, Hazard V, Kober T, Montard A, Nodet M, Parent M, Dalmasso C, Gainon A, Jouve O, Pichard S, Puel J, Simon R, Nidelet T, Sicard D. Minimal influence of milling technique in contrast to sourdough on the nutritional and organoleptic quality of bread. Food Microbiol 2024; 118:104426. [PMID: 38049266 DOI: 10.1016/j.fm.2023.104426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/20/2023] [Accepted: 11/10/2023] [Indexed: 12/06/2023]
Abstract
A number of studies have shown the effect of cereals and sourdough on bread nutritional and organoleptic quality, but the impact of the milling technique remains little studied. There are two main types of milling technic depending on the bread-making food chain. Industrial bakeries mainly use roller mills while artisanal bakeries may also use stone mill. We set up a participatory experiment with six millers and four bakers to study the impact of these two milling techniques on the quality of flours, sourdough microbiota and the quality of breads. Millers made twenty-two different flours from four different wheat grain varieties using either roller or stone mills. Each baker initiated and maintained sourdoughs with three roller-milled and three stone-milled flours during at least 32 backsloppings and then made bread. The analysis of flours revealed a typical granulometry profile linked to wheat hardness with higher particle sizes for stone-milled flours. Stone-milled flours also had a higher maltose content. However, the milling technic did not drive the composition of the sourdough microbiota. Moreover, the analysis of bread revealed that variation in bread protein fractions and in bread aroma compounds were more related to the specific baker microbial community than to the milling technique. Carbohydrate contents were clearly linked to the main LAB species metabolism. These results revealed that the sourdough microbial community shapes the organoleptic and nutritional quality of bread more than milling techniques.
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Affiliation(s)
- Lauriane Mietton
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | | | | | - Thérèse Marlin
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | | | - Elodie Canaguier
- IATE, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Teddy Godet
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Valérie Nolleau
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Diego Segond
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Denis Cassan
- IATE, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | | | | | | | | | | | | | | | | | - Tom Kober
- Le Pain des Cairns, Grenoble, France
| | | | | | | | | | | | | | | | - Johan Puel
- Moulin du Rey, Saint-Saturnin-de-Lenne, France
| | - Robin Simon
- Ferme Biodélices, Saint-Julien-sur-Veyle, France
| | - Thibault Nidelet
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
| | - Delphine Sicard
- SPO, Univ Montpellier, INRAE, Institut Agro, Montpellier, France.
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Jia J, Deng X, Jia X, Guo C, Liu X, Liu Y, Duan X. Comparison and evaluation of L. reuteri and L. rhamnosus-fermented egg yolk on the physicochemical and flavor properties of cookies. Food Chem X 2024; 21:101096. [PMID: 38229672 PMCID: PMC10790001 DOI: 10.1016/j.fochx.2023.101096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/18/2024] Open
Abstract
The study aims to explore an effective approach to improve the sensory quality and consumer satisfaction of cookies in the food industry. L. reuteri and L. rhamnosus were chosen to ferment egg yolk and their effects on dough properties and physicochemical properties, flavor, texture, color, and sensory acceptability of cookies were studied. Results show that the utilization of fermented egg yolk significantly decreased baking loss and increased spread factor of cookies. GC-MS analysis indicates different Lactobacillus species enhanced cookie flavor through unique mechanisms. Texture analysis shows cookies prepared with L. rhamnosus-fermented egg yolk had significantly lower hardness (1807.12 g) than control cookies (2028.34 g). Sensory evaluation reveals the L. reuteri-fermented egg yolk significantly improved the overall acceptability of cookies by enhancing appearance, flavor, and mouthfeel scores. These findings have practical implications for food manufacturers seeking to enhance their product's quality and appeal, thereby gaining a competitive edge in the market.
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Affiliation(s)
- Jie Jia
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
| | - Xiaofan Deng
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
| | - Xin Jia
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
| | - Chunfeng Guo
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
| | - Yuanjing Liu
- Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China
| | - Xiang Duan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, PR China
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5
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Yang Y, Cui J, Jiang Z, Zhao X. GC × GC-ToF-MS combined with multivariate statistical methods to explore the effects of L. paracasei fermentation on bread flavor characteristics. Food Chem 2024; 435:137643. [PMID: 37801769 DOI: 10.1016/j.foodchem.2023.137643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 09/16/2023] [Accepted: 09/29/2023] [Indexed: 10/08/2023]
Abstract
GC × GC-ToF-MS is increasingly used to analyze complex food flavors due to its high resolution and sensitivity, but few studies have used the method to identify aroma components of bread. For the first time, this study combines GC × GC-ToF-MS and multivariate statistical methods to explore the effects of L. paracasei fermentation on bread flavor characteristics. A total of 1534 volatile organic compounds were identified, of which 447 were obtained by metabolome normalization. Based on the variable importance for the projection and p values, 82 different compounds were screened in L. paracasei bread compared with yeast bread, and the total relative content was 1.52 times higher than that of yeast bread. 2-Furancarboxaldehyde, 5-methyl-, pentanoic acid, 2-hydroxy-4-methyl-, ethyl ester, pyrazine, 2,5-dimethyl- and γ-terpinene are aroma-presenting substances specific to L. paracasei bread that could be potential identification compounds. This study provides a new techno-theoretical approach for the characterization and discrimination of LAB bread flavors.
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Affiliation(s)
- Yuxia Yang
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, Liaoning Province, China
| | - Jinxi Cui
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, Liaoning Province, China
| | - Zhongli Jiang
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, Liaoning Province, China
| | - Xiuhong Zhao
- College of Grain Science and Technology, Shenyang Normal University, Shenyang 110034, Liaoning Province, China.
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6
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Cera S, Tuccillo F, Knaapila A, Sim F, Manngård J, Niklander K, Verni M, Rizzello CG, Katina K, Coda R. Role of tailored sourdough fermentation in the flavor of wholegrain-oat bread. Curr Res Food Sci 2024; 8:100697. [PMID: 38487179 PMCID: PMC10937307 DOI: 10.1016/j.crfs.2024.100697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/23/2024] [Accepted: 02/09/2024] [Indexed: 03/17/2024] Open
Abstract
Sourdough technology has been known for its role in the improvement of texture, flavor, and quality of mainly wheat and rye-based breads for decades. However, little is reported about its use in the improvement of whole-grain oat bread, especially concerning flavor formation, which is one major consumer drivers. This study investigated the effects of sourdough obtained by different lactic acid bacteria and yeast starters consortia on the texture and flavor of 100% oat bread. Four different consortia were selected to obtain four oat sourdoughs, which were analyzed to assess the main features due to the different starter fermentation metabolism. Sourdoughs were added to breads as 30% dough weight. Bread quality was technologically monitored via hardness and volume measurements. Sourdough breads were softer and had higher specific volume. The sensory profile of sourdoughs and breads was assessed by a trained panel in sensory laboratory conditions, and the volatile profile was analyzed by HS-SPME-GC-MS. Sourdoughs were rated with higher intensities than untreated control for most of attributes, especially concerning sour aroma and flavor attributes. Sourdough breads were rated with higher intensities than control bread for sour vinegar flavor and total odor intensity, in addition they had richer volatile profile. Our results confirmed that sourdough addition can lead to an enhanced flavor, moreover, it demonstrated that the use of different consortia of lactic acid bacteria and yeast strains leads to the improvement of texture and altered sensory profile of whole-oat bread.
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Affiliation(s)
- Silvia Cera
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Fabio Tuccillo
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Antti Knaapila
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Finlay Sim
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Jessica Manngård
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Katariina Niklander
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Michela Verni
- Department of Environmental Biology, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Carlo Giuseppe Rizzello
- Department of Environmental Biology, “Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Kati Katina
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
| | - Rossana Coda
- Department of Food and Nutrition, P.O. Box 66 (Agnes Sjöbergin Katu 2), University of Helsinki, FI-00014, Helsinki, Finland
- Helsinki Institute of Sustainability Science, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland
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Fu W, Wang S, Xue W. Mechanism of carbohydrate and protein conversion during sourdough fermentation: An analysis based on representative Chinese sourdough microbiota. Int J Food Microbiol 2024; 410:110487. [PMID: 38035403 DOI: 10.1016/j.ijfoodmicro.2023.110487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 08/19/2023] [Accepted: 11/11/2023] [Indexed: 12/02/2023]
Abstract
Sourdough fermentation is attracting growing attention because of its positive effects on properties of leavened baked good. However, the changes in dough features and the mechanisms behind them are not well understood, which limits its widespread use. In this study, we assessed the effects of representative lactic acid bacteria in sourdough monoculture or co-culture with yeasts on dough characteristics. Physicochemical analysis identified increased proteolysis and enhanced nutritional properties of co-culture groups. However, a reduction in organic acids contents of co-culture groups compared to monoculture was detected, and this effect was not limited by the yeast species. The RNA sequencing further demonstrated that the presence of yeast enhanced the protein metabolic activity of lactic acid bacteria, while decreased its organic acid biosynthetic activity. Moreover, the proteomic analysis revealed that endogenous metabolic proteins of flour, such as pyruvate kinase, glucosyltransferase and pyruvate dehydrogenase play a key role in carbohydrate metabolism during fermentation. This study uncovered the influence of typical microorganisms and endogenous enzymes on dough characteristics based on different aspects. Bacteria-mediated consumption of proteins and increased proteolysis in co-culture groups may underlie the improved digestibility and nutritional effects of sourdough fermented products, which provides an important basis for nutrient fortified bread making with multi-strain leavening agent.
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Affiliation(s)
- Wenhui Fu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
| | - Wentong Xue
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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Fu Y, Sun M, Feng T, Liu Q, Yao L, Yu C, Song S. Impact of Leavening Agents on Flavor Profiles and Microbial Communities in Steamed Bread: A Comparative Analysis of Traditional Chinese Sourdough and Commercial Yeast. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:18973-18985. [PMID: 37915201 DOI: 10.1021/acs.jafc.3c05321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Chinese steamed bread (CSB) made with commercial yeasts and traditional Chinese sourdoughs was analyzed for the flavor and microbial communities. Sensory attributes were assessed using quantitative descriptive analysis (QDA). Results showed that commercial yeast CSB-1 (JMMT1), a yeast-based sample, had stronger milky and sweet attributes, while commercial yeast CSB-2 (JMMT2) had more pronounced yeasty attributes. Among the sourdough-based samples, Shandong traditional sourdough steamed bread (SDMT) exhibited a winelike character with a weak sweet aftertaste, whereas Shanxi traditional sourdough steamed bread (SXMT) had a distinct sour attribute and a less prominent floury taste. SAFE-GC-O-MS analysis identified 40 aroma compounds with FD values ≥2, including 33 key aroma compounds with an OAV of ≥1. Compounds such as 2,3-butanediol, decanal, methyl isobutenyl ketone, gamma-nonanolactone, ethyl caprate, 2-ethylhexyl acetate, vanillin, and indole contributed significantly to the diverse aroma profiles. High-throughput sequencing revealed dominant strains: Bacillus in JMMT1, Lactobacillus in JMMT2, Bacillus in SDMT, and Lactobacillus in SXMT. Over two-thirds of the aroma compounds showed correlations with microorganisms. Notably, Acetobacter exhibited a highly significant correlation with butanoic acid, while Lactobacillus played a significant role in the formation of ester flavors. These findings contribute to the flavor evaluation and microbial community analysis of steamed bread made with different leavening agents, providing valuable insights into their relationship.
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Affiliation(s)
- Yuanzhe Fu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Min Sun
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Tao Feng
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Qian Liu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Lingyun Yao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Chuang Yu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
| | - Shiqing Song
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, PR China
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9
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Li L, Zhang H, Meng D, Yin H. Transcriptomics of Lactobacillus paracasei: metabolism patterns and cellular responses under high-density culture conditions. Front Bioeng Biotechnol 2023; 11:1274020. [PMID: 37901845 PMCID: PMC10601642 DOI: 10.3389/fbioe.2023.1274020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/02/2023] [Indexed: 10/31/2023] Open
Abstract
Lactobacillus paracasei has significant potential for development and application in the environmental field, particularly in addressing malodor pollution. This study aims to investigate the cellular response of L. paracasei B1 under high-density culture conditions. The selected strain has previously shown effective deodorizing and bacteriostatic abilities. Transcriptomics techniques are employed to dissect the nutrient metabolism pattern of L. paracasei B1 and its response mechanism under environmental stress. The study characterizes the functions of key differentially expressed genes during growth before and after optimizing the culture conditions. The optimization of fermentation culture conditions provides a suitable growth environment for L. paracasei B1, inducing an enhancement of its phosphotransferase system for sugar source uptake and maintaining high levels of glycolysis and pyruvate metabolism. Consequently, the strain is able to grow and multiply rapidly. Under acid stress conditions, glycolysis and pyruvate metabolism are inhibited, and L. paracasei B1 generates additional energy through aerobic respiration to meet the energy demand. The two-component system and quorum sensing play roles in the response and regulation of L. paracasei B1 to adverse environments. The strain mitigates oxygen stress damage through glutathione metabolism, cysteine and methionine metabolism, base excision repair, and purine and pyrimidine metabolism. Additionally, the strain enhances lysine synthesis, the alanine, aspartate, and glutamate metabolic pathways, and relies on the ABC transport system to accumulate amino acid-compatible solutes to counteract acid stress and osmotic stress during pH regulation. These findings establish a theoretical basis for the further development and application of L. paracasei B1 for its productive properties.
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Affiliation(s)
- Liangzhi Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, China
| | - Hetian Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, China
| | - Delong Meng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, China
| | - Huaqun Yin
- School of Minerals Processing and Bioengineering, Central South University, Changsha, China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, China
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Su R, Ke W, Bai J, Wang M, Usman S, Xie D, Xu D, Chen M, Guo X. Comprehensive profiling of the metabolome in corn silage inoculated with or without Lactiplantibacillus plantarum using different untargeted metabolomics analyses. Arch Anim Nutr 2023; 77:323-341. [PMID: 37726873 DOI: 10.1080/1745039x.2023.2247824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 08/04/2023] [Indexed: 09/21/2023]
Abstract
Silage fermentation is a complicated biochemical process involving interactions between microbes and metabolites. However, the overall metabolome feature of ensiled forage and its response to lactic acid bacteria inoculation is poorly understood. Hence, in this study metabolome profiles of whole-plant corn silage inoculated with or without Lactiplantibacillus plantarum were characterised via solid-phase microextraction/gas chromatography/mass spectrometry (SPME-GC-MS), gas chromatography/time-of-flight mass spectrometry (GC-TOF-MS), and Liquid chromatography/Q Exactive HFX mass spectrometry (LC-QE-MS/MS) analysis. There were 2087 identified metabolites including 1143 reliably identified metabolites in fresh and ensiled whole-plant corn. After ensiling, the increased metabolites in whole-plant corn were mainly composed of organic acids, volatile organic compounds (VOC), benzene and substituted derivatives, carboxylic acids and derivatives, fatty acyls, flavonoids, indoles and derivatives, organooxygen compounds (including amines and amides), phenols, pyridines and derivatives, and steroids and steroid derivatives, which includes neurotransmitters and metabolites with aromatic, antioxidant, anti-inflammatory, and antimicrobial activities. Phenylacetaldehyde was the most abundant aromatic metabolite after ensiling. L-isoleucine and oxoproline were the major free amino acids in silage. Ensiling markedly increased the relative abundances of 3-phenyllactic acid, chrysoeriol, 6-O-acetylaustroinulin, acetylcholine, γ-aminobutyric acid, pyridoxine, and alpha-linoleic acid. Inoculation with L. plantarum remarkably changed silage VOC composition, and essential amino acids, 3-phenyllactic acid, and cinnamaldehyde compared with untreated silage. The present study does not only provide a deeper insight into metabolites of the ensiled whole-plant corn but also reveals metabolites with specific biological functions that could be much helpful in screening novel lactic acid bacteria to well ensile forages. Inoculation with L. plantarum significantly affects the metabolome in ensiled whole-plant corn.
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Affiliation(s)
- Rina Su
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, PR China
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, PR China
| | - Wencan Ke
- Department of Animal Science, Ningxia University, Yinchuan, PR China
| | - Jie Bai
- College of Grassland Science, Gansu Agricultural University, Lanzhou, China
| | - Musen Wang
- Department of Animal Science and Technology, Hainan University, Haikou, PR China
| | - Samaila Usman
- State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, PR China
| | - Dongmei Xie
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, PR China
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, PR China
| | - Dongmei Xu
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, PR China
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, PR China
| | - Mengyan Chen
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, PR China
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, PR China
| | - Xusheng Guo
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, PR China
- Probiotics and Biological Feed Research Centre, Lanzhou University, Lanzhou, PR China
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11
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Gundogan BN, Saricoban C, Unal K. The effect of different drying methods on some physico-chemical, functional and protein structure properties of liquid egg white fermented by Lactobacillus rhamnosus GG. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:2433-2443. [PMID: 37424576 PMCID: PMC10326199 DOI: 10.1007/s13197-023-05766-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/03/2023] [Accepted: 05/09/2023] [Indexed: 07/11/2023]
Abstract
This research aims to understand the effect of Lactobacillus rhamnosus GG fermentation on egg white powder. In this study, some physico-chemical, functional, textural, and protein structure properties of microwave (MD) and oven dried (OD) egg white powders were determined. The fermentation process decreased the pH value (5.92, 5.82) and foaming capacity (20.83%, 27.20%) of MD and OD groups. The highest yield (11.61%) and emulsion capacity values (78.17%) were observed in fermented oven dried group. While MD group (703.22 g) had the lowest hardness value, OD group (3301.35 g) exhibited highest hardness value. The denaturation peaks of the samples were ranged between 61.00 °C and 80.43 °C. Scanning electron microscopy images of all sample groups showed broken glass structure. This study suggests that fermentation (L. rhamnosus GG) can effectively improve the quality properties of egg white powder and thus fermented egg white powders could be used in the food industry. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s13197-023-05766-4.
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Affiliation(s)
- Busra Nur Gundogan
- Department of Food Engineering, Agriculture Faculty, Selçuk University, Konya, 42075 Turkey
| | - Cemalettin Saricoban
- Department of Food Engineering, Agriculture Faculty, Selçuk University, Konya, 42075 Turkey
| | - Kubra Unal
- Department of Food Engineering, Agriculture Faculty, Selçuk University, Konya, 42075 Turkey
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12
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Wei G, Regenstein JM. Microbiota structure of traditional starters from around the Tai-hang mountains and their influence on the fermentation properties, aroma profile and quality of Chinese steamed bread. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:5116-5125. [PMID: 37002807 DOI: 10.1002/jsfa.12592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/25/2023] [Accepted: 04/01/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND Steamed bread is a popular staple food in China, and the significant regional differences of the microbiota in traditional starters make the flavor and quality of steamed bread highly variable along with long preparation times. Therefore, analyzing the microbial flora of traditional starters and their influences on the flavor and quality may help to solve the problems mentioned earlier, and it may also be conducive to potentially meet consumer needs and permit industrialization of this traditional fermented food. RESULTS One hundred and thirty-two fungal and 50 bacterial species were identified in five traditional starters, each with a different dominant genus. The fermentation properties of dough showed that total titratable acid, dough volume and gas production increased and the pH decreased with fermentation time. The traditional starters improved the quality of Chinese steamed bread (CSB) including the crumb structure, specific volume and sensory attributes. Thirty-three aroma compounds with a VIP (variable importance for the projection) > 1 were identified as characteristic aroma compounds. The correlations among the microbiota, aroma and qualities of CSB showed a greater contribution from the bacteria, which was consistent with the predictions of metabolic pathways in the sequenced genomes. CONCLUSION The quality of CSB fermented with traditional starters was improved induced by their different microbial profiles, and bacteria made a greater contribution than fungus to the aroma and qualities of CSB. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Guanmian Wei
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
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13
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Illueca F, Moreno A, Calpe J, Nazareth TDM, Dopazo V, Meca G, Quiles JM, Luz C. Bread Biopreservation through the Addition of Lactic Acid Bacteria in Sourdough. Foods 2023; 12:foods12040864. [PMID: 36832942 PMCID: PMC9956393 DOI: 10.3390/foods12040864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/22/2023] Open
Abstract
Nowadays, the consumer seeks to replace synthetic preservatives with biopreservation methods, such as sourdough in bread. Lactic acid bacteria (LAB) are used as starter cultures in many food products. In this work, commercial yeast bread and sourdough breads were prepared as controls, as well as sourdough breads with L. plantarum 5L1 lyophilized. The impact of L. plantarum 5L1 on the properties of bread was studied. Antifungal compounds and the impact on the protein fraction by the different treatments in doughs and breads were also analyzed. In addition, the biopreservation capacity of the treatments in breads contaminated with fungi was studied and the mycotoxin content was analyzed. The results showed significant differences with respect to the controls in the properties of the bread and a higher total phenolic and lactic acid content in breads with higher amounts of L. plantarum 5L1. In addition, there was a higher content of alcohol and esters. Furthermore, adding this starter culture produced hydrolysis of the 50 kDa band proteins. Finally, the higher concentration of L. plantarum 5L1 delayed fungal growth and reduced the content of AFB1 and AFB2 compared to the control.
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Affiliation(s)
- Francisco Illueca
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Ana Moreno
- AgrotechUV Incubator, Scientific Park of University of Valence, St. Catedrático Agustín Escardino 9, 46980 Paterna, Spain
| | - Jorge Calpe
- AgrotechUV Incubator, Scientific Park of University of Valence, St. Catedrático Agustín Escardino 9, 46980 Paterna, Spain
| | - Tiago de Melo Nazareth
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Correspondence: ; Tel.: +34-963-544-959
| | - Victor Dopazo
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Giuseppe Meca
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Juan Manuel Quiles
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - Carlos Luz
- Department of Food Science and Toxicology, Faculty of Pharmacy, University of Valencia, Ave. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
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14
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Tang N, Xing X, Li H, Jiao H, Ji S, Ai Z. Effect of Alkali on the Microbial Community and Aroma Profile of Chinese Steamed Bread Prepared with Chinese Traditional Starter. Foods 2023; 12:foods12030617. [PMID: 36766145 PMCID: PMC9914934 DOI: 10.3390/foods12030617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/23/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Alkali is an indispensable additive in Chinese steamed bread (CSB) production. This work aimed to evaluate the key roles of alkali in the microbial community of dough fermented using Chinese traditional starter (CTS) and the aroma profiles of CSB. The dominant fungi in CTS and fermented dough were members of the phylum Ascomycota and the genus Saccharomyces. Pediococcus, Companilactobacillus, and Weissella were the dominant bacterial genera in CTS and fermented dough. Adding alkali could retain the types of dominant yeasts and LAB derived from CTS, decrease the relative abundance of Companilactobacillus crustorum and Weissella cibaria, and increase that of Pediococcus pentosaceus, in fermented dough. Principal component analysis (PCA) indicated that adding alkali decreased the content of sourness-related volatiles in CSB fermented by CTS. Correlation analysis showed that Pediococcus and Weissella in fermented dough were positively correlated with the lipid oxidation flavor-related compounds in CSB, and Lactobacillus was positively correlated with sourness-related aroma compounds. Synthetic microbial community experiments indicated that CSB fermented by the starter containing P. pentosaceus possessed a strong aroma, and adding alkali weakened the flavor intensity. Alkali addition could promote the formation of ethyl acetate and methyl acetate with a pleasant fruity aroma in W. cibaria-associated CSB.
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Affiliation(s)
- Ning Tang
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Rd., Zhengzhou 450002, China
- College of Biology and Food, Shangqiu Normal University, Shangqiu 476000, China
- National R&D Center for Frozen Rice&Wheat Products Processing Technology, Zhengzhou 450002, China
| | - Xiaolong Xing
- College of Biology and Food, Shangqiu Normal University, Shangqiu 476000, China
| | - Huipin Li
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Rd., Zhengzhou 450002, China
- National R&D Center for Frozen Rice&Wheat Products Processing Technology, Zhengzhou 450002, China
| | - Honggang Jiao
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Rd., Zhengzhou 450002, China
- National R&D Center for Frozen Rice&Wheat Products Processing Technology, Zhengzhou 450002, China
| | - Shengxin Ji
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Rd., Zhengzhou 450002, China
- Key Laboratory of Staple Grain Processing, Ministry of Agriculture and Rural Affairs, Zhengzhou 450002, China
| | - Zhilu Ai
- College of Food Science and Technology, Henan Agricultural University, 63 Nongye Rd., Zhengzhou 450002, China
- National R&D Center for Frozen Rice&Wheat Products Processing Technology, Zhengzhou 450002, China
- Key Laboratory of Staple Grain Processing, Ministry of Agriculture and Rural Affairs, Zhengzhou 450002, China
- Correspondence: ; Tel./Fax: +86-371-63558150
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15
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Peng F, Huang H, Lin JX, Yang T, Xie M, Xiong T, Peng Z. Development of yacon syrup fermented by Lactiplantibacillus plantarum NCU001043: Metabolite profiling, antioxidant and glycosidase inhibition activity. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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16
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Red Beetroot Fermentation with Different Microbial Consortia to Develop Foods with Improved Aromatic Features. Foods 2022; 11:foods11193055. [PMID: 36230131 PMCID: PMC9562875 DOI: 10.3390/foods11193055] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
The European culinary culture relies on a wide range of fermented products of plant origin, produced mostly through spontaneous fermentation. Unfortunately, this kind of fermentations is difficult to standardize. Therefore, the use of commercial starter cultures is becoming common to achieve more stable, reproducible, and predictable results. Among plant-based fermentation processes, that of the red beet (Beta vulgaris L. var. conditiva) is scarcely described in the scientific literature. In this work, we compared different types of fermentation methods of beetroot and evaluated the processes' micro-biological, physico-chemical, structural, and volatilome features. A multi-variate analysis was used to match the production of specific VOCs to each starter and to define the correlations between the process variables and volatilome. Overall, the results showed a successful lactic acid fermentation. The analysis of the volatilome clearly discriminated the metabolic profiles of the different fermentations. Among them, the sample fermented with the mixture was the one with the most complex and diversified volatilome. Furthermore, samples did not appear softened after fermentation. Although this work had its weaknesses, such as the limited number of samples and variety, it may pave the way for the standardization of artisanal fermentation procedures of red beetroot in order to improve the quality and safety of the derived food products.
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17
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The Mutual Influence of Predominant Microbes in Sourdough Fermentation: Focusing on Flavor Formation and Gene Transcription. Foods 2022; 11:foods11152373. [PMID: 35954139 PMCID: PMC9367918 DOI: 10.3390/foods11152373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 11/17/2022] Open
Abstract
The interplay between microorganisms generally plays a vital role in food fermentation. In this study, the mutual influence of Saccharomyces cerevisiae and Fructilactobacillus sanfranciscensis, the two predominant microbes in the sourdough ecosystem, were investigated in situ during fermentation. Doughs fermented with S. cerevisiae, F. sanfranciscensis, or their combination were compared regarding acid production, microbial density, and volatiles. Furthermore, in situ gene expressions were investigated using RNA-sequencing. The results showed that the presence of S. cerevisiae had no visible influence on F. sanfranciscensis, whereas F. sanfranciscensis facilitated the growth of S. cerevisiae but affected its volatile production since metabolites such as 3-methyl-1-butanol decreased. The RNA-sequencing demonstrated that S. cerevisiae significantly changed the gene transcripts implicated in amino acid metabolism in F. sanfranciscensis and may stimulate its growth suggested by the enrichment of the KEGG pathway of peptidoglycan biosynthesis.
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18
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Impact of Leavening Agent and Wheat Variety on Bread Organoleptic and Nutritional Quality. Microorganisms 2022; 10:microorganisms10071416. [PMID: 35889135 PMCID: PMC9317705 DOI: 10.3390/microorganisms10071416] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 02/06/2023] Open
Abstract
Leavened bread can be made with different wheat varieties and leavening agents. Several studies have now demonstrated that each of these factors can play a role in bread quality. However, their relative impact in artisanal bread making remains to be elucidated. Here, we assessed the impact of two wheat varieties as well as the impact of sourdoughs and yeasts on multiple components of bread organoleptic and nutritional quality. Using a participatory research approach including scientists and bakers, we compared breads leavened with three different sourdoughs and three different commercial yeasts as well as a mix of sourdough and yeast. Breads were made from two wheat varieties commonly used in organic farming: the variety “Renan” and the landrace “Barbu”. Except for bread minerals contents that mostly depended on wheat variety, bread quality was mostly driven by the fermenting agent. Sourdough breads had lower sugar and organic acids contents. These differences were mostly attributable to lower amounts of maltose and malate. They also had a higher proportion of soluble proteins than yeast breads, with specific aroma profiles. Finally, their aroma profiles were specific and more diverse compared to yeast breads. Interestingly, we also found significant nutritional and organoleptic quality differences between sourdough breads. These results highlight the value of sourdough bread and the role of sourdough microbial diversity in bread nutritional and organoleptic quality.
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19
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Jia J, Xiong D, Bai J, Yuan Y, Song Q, Lan T, Tian L, Guo C, Liu X, Wang C, Duan X. Investigation on flavor and physicochemical properties of angel food cakes prepared by lactic acid fermented egg white. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Changes in the Volatile Profile of Wheat Sourdough Produced with the Addition of Cava Lees. Molecules 2022; 27:molecules27113588. [PMID: 35684518 PMCID: PMC9181908 DOI: 10.3390/molecules27113588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 12/04/2022] Open
Abstract
The volatile fraction is of great importance for the organoleptic quality and consumer acceptance of bread. The use of sourdough improves the sensory profile of bread, as well as the addition of new ingredients to the fermentation. Cava lees are a sparkling wine by-product formed of dead microorganisms, tartaric acid, and other inorganic compounds, rich in antioxidant compounds as well as β-glucans and mannoproteins. The aim of this study was to evaluate the effect of different concentrations of Cava lees (0–2% w/w) on sourdough volatile compounds to re-valorize this by-product of the wine industry. Headspace solid-phase microextraction (HS-SPME) was optimized to study the volatile fractions of sourdoughs. The parameters selected were 60 °C, 15 min of equilibrium, and 30 min of extraction. It was found that the addition of Cava lees resulted in higher concentrations of volatile compounds (alcohols, acids, aldehydes, ketones and esters), with the highest values being reached with the 2% Cava lees. Moreover, Cava lees contributed to aroma due to the compounds usually found in sparkling wine, such as 1-butanol, octanoic acid, benzaldehyde and ethyl hexanoate.
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21
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Boyaci Gunduz CP, Agirman B, Gaglio R, Franciosi E, Francesca N, Settanni L, Erten H. Evaluation of the variations in chemical and microbiological properties of the sourdoughs produced with selected lactic acid bacteria strains during fermentation. Food Chem X 2022; 14:100357. [PMID: 35693452 PMCID: PMC9178471 DOI: 10.1016/j.fochx.2022.100357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 05/18/2022] [Accepted: 06/01/2022] [Indexed: 11/28/2022] Open
Abstract
Chemical, microbiological and VOCs profile showed the relevance of starter addition. MiSeq Illumina confirmed that Lactobacillus spp. constituted the major LAB group. Fructilactobacillus sanfranciscensis was the most isolated LAB species. Rapid acidifying LAB strains should be preferred for sourdough production. Number of VOCs increased in sourdoughs produced with starter culture.
This research aimed to analyze variations in chemical properties, microbiological characteristics and generated volatile organic compounds (VOCs) profile during sourdough fermentation. Sourdoughs were collected from different cities in Turkey at two different times and lactic acid bacteria (LAB) in the samples were identified with culture-independent and culture-dependent molecular methods. According to culture-dependent methodology, thirteen LAB species were identified. Lactobacillus spp. were identified as the major group according to MiSeq Illumina analysis. Technological potential of commonly isolated LAB species was evaluated. Due to high frequency of isolation, Fructilactobacillus sanfranciscensis and Lactiplantibacillus plantarum strains were better investigated for their technological traits useful in sourdough production. Experimental sourdoughs were produced with mono- and dual-culture of the selected strains and chemical properties and microbiological characteristics, as well as VOCs profile of the sourdoughs, were subjected to multivariate analysis which showed the relevance of added starter, in terms of acidification and VOCs profile.
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22
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By-Product Revalorization: Cava Lees Can Improve the Fermentation Process and Change the Volatile Profile of Bread. Foods 2022; 11:foods11091361. [PMID: 35564084 PMCID: PMC9099486 DOI: 10.3390/foods11091361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 02/04/2023] Open
Abstract
Wine lees are a by-product that represents a 25% of the total winery waste. Although lees are rich in antioxidant compounds and dietary fiber, they have no added value and are considered a residue. The aim of this study was to evaluate the effect of Cava lees (0 and 5% w/w) on microbial populations during sourdough and bread fermentation and the volatile fraction of the final bread. The results showed that 5% Cava lees promoted the growth of both lactic acid bacteria (LAB) and yeast in short fermentations (bread) but did not improve microbial growth in long fermentations (sourdough). Regarding volatile compounds, the addition of Cava lees increased the concentration of volatiles typically found in those products. Also, some compounds reported in sparkling wines were also identified in samples with Cava lees adsorbed on their surface. To sum up, the addition of Cava lees to sourdough and, especially, bread formulation may be a new strategy to revalorize such by-product.
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23
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Effect of sourdough fermented with corn oil and lactic acid bacteria on bread flavor. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112935] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Lei J, Yang D, Li R, Dai Z, Zhang C, Yu Z, Wu S, Pang L, Liang S, Zhang Y. Label-free surface-enhanced Raman spectroscopy for diagnosis and analysis of serum samples with different types lung cancer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 261:120021. [PMID: 34116414 DOI: 10.1016/j.saa.2021.120021] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/07/2021] [Accepted: 05/23/2021] [Indexed: 05/20/2023]
Abstract
Screening and detection of early lung cancer is important for diagnosis and prognosis. Intervention in early stage of lung cancer can significantly improve the cure and survival of patients. Surface-enhanced Raman spectroscopy (SERS) is an increasingly popular method of diagnosing cancer. We used silver nanoparticles (AgNPs) as the Raman-enhanced substrate to increase Raman signals, which contributes to the subsequent classification of lung cancer and normal serum. SERS acquired from the serum indicated the difference in biochemical components between cancerous (n = 51) lung serum and normal (n = 18) serum. Principal component analysis (PCA) and partial least-squares discriminant analysis (PLS-DA) were utilized to establish the identification model, and the various indicators of PLS-DA were all superior to those of the PLS model. Our study offers a new proposal for the universal applicability of analysis and identification with SERS of serum samples in clinical diagnosis.
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Affiliation(s)
- Jia Lei
- School of Physics, Dalian University of Technology, Dalian, 116023, People's Republic of China
| | - Dafu Yang
- The Second Department of Thoracic Medical Oncology, The Second Hospital of Dalian Medical University, Dalian, People's Republic of China
| | - Rui Li
- School of Physics, Dalian University of Technology, Dalian, 116023, People's Republic of China.
| | - ZhaoXia Dai
- The Second Department of Thoracic Medical Oncology, The Second Hospital of Dalian Medical University, Dalian, People's Republic of China.
| | - Chenlei Zhang
- Department of Thoracic Surgery, Liaoning Cancer Hospital & Institute, Cancer Hospital of Dalian University of Technology, Shenyang 110042, People's Republic of China
| | - Zhanwu Yu
- Department of Thoracic Surgery, Liaoning Cancer Hospital & Institute, Cancer Hospital of Dalian University of Technology, Shenyang 110042, People's Republic of China
| | - Shifa Wu
- School of Physics, Dalian University of Technology, Dalian, 116023, People's Republic of China
| | - Lu Pang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Shanshan Liang
- The Key Laboratory of Biomarker High Throughput Screening and Target Translation of Breast and Gastrointestinal Tumor, Oncology Department, Affiliated Zhongshan Hospital of Dalian University, Dalian 116023, People's Republic of China
| | - Yi Zhang
- School of Physics, Dalian University of Technology, Dalian, 116023, People's Republic of China
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Jiang C, Liu M, Yan X, Bao R, Liu A, Wang W, Zhang Z, Liang H, Ji C, Zhang S, Lin X. Lipase Addition Promoted the Growth of Proteus and the Formation of Volatile Compounds in Suanzhayu, a Traditional Fermented Fish Product. Foods 2021; 10:foods10112529. [PMID: 34828810 PMCID: PMC8625596 DOI: 10.3390/foods10112529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/09/2021] [Accepted: 10/15/2021] [Indexed: 11/16/2022] Open
Abstract
This work investigated the effect of lipase addition on a Chinese traditional fermented fish product, Suanzhayu. The accumulation of lactic acid and the decrease of pH during the fermentation were mainly caused by the metabolism of Lactobacillus. The addition of lipase had little effect on pH and the bacterial community structure but promoted the growth of Proteus. The addition of lipase promotes the formation of volatile compounds, especially aldehydes and esters. The formation of volatile compounds is mainly divided into three stages, and lipase had accelerated the fermentation process. Lactobacillus, Enterococcus and Proteus played an important role not only in inhibition of the growth of Escherichia-Shigella, but also in the formation of flavor. This study provides a rapid fermentation method for the Suanzhayu process.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Xinping Lin
- Correspondence: or ; Tel.: +86-0411-8631-8675
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26
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Zhen-Dong Z, Yu-Rong W, Fan-Shu X, Qiang-Chuan H, Zhuang G. Distinct bacterial community of a solid-state fermented Chinese traditional food huase sufu revealed by high-throughput sequencing. Food Sci Biotechnol 2021; 30:1233-1241. [PMID: 34603822 DOI: 10.1007/s10068-021-00963-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 06/25/2021] [Accepted: 07/29/2021] [Indexed: 11/24/2022] Open
Abstract
Sufu is a common solid-state traditional fermented food made from soybean. Huase sufu is a typical type found in several provinces of China, especially in Hubei. However, little is known about the bacterial community. High-throughput sequencing technology revealed that the dominant taxa at phylum level were: Firmicutes, Proteobacteria and Bacteroides, and at the genus level were: Pseudomonas, Lactococcus, Acinetobacter, etc. Additionally, LEfSe revealed that compared with the bacterial community of red sufu and white sufu, the biomarker genera for both huase sufu were Enterococcus, and Myroides. Moreover, there were twenty-eight hubs for the huase sufu samples, and four of them were dominant genera: Citrobacter, Myroides, Vagococcus, and Enterococcus. These results provide a new insight into our understanding of the bacterial diversity of huase sufu, and will facilitate the isolation, screening, and development potential bacterial strains for production of huase sufu. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-021-00963-3.
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Affiliation(s)
- Zhang Zhen-Dong
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei People's Republic of China
| | - Wang Yu-Rong
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei People's Republic of China
| | - Xiang Fan-Shu
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei People's Republic of China
| | - Hou Qiang-Chuan
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei People's Republic of China
| | - Guo Zhuang
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei People's Republic of China
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De Vuyst L, Comasio A, Kerrebroeck SV. Sourdough production: fermentation strategies, microbial ecology, and use of non-flour ingredients. Crit Rev Food Sci Nutr 2021; 63:2447-2479. [PMID: 34523363 DOI: 10.1080/10408398.2021.1976100] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sourdough production is an ancient method to ferment flour from cereals for the manufacturing of baked goods. This review deals with the state-of-the-art of current fermentation strategies for sourdough production and the microbial ecology of mature sourdoughs, with a particular focus on the use of non-flour ingredients. Flour fermentation processes for sourdough production are typically carried out by heterogeneous communities of lactic acid bacteria and yeasts. Acetic acid bacteria may also occur, although their presence and role in sourdough production can be criticized. Based on the inoculum used, sourdough productions can be distinguished in fermentation processes using backslopping procedures, originating from a spontaneously fermented flour-water mixture (Type 1), starter culture-initiated fermentation processes (Type 2), and starter culture-initiated fermentation processes that are followed by backslopping (Type 3). In traditional recipes for the initiation and/or propagation of Type 1 sourdough productions, non-flour ingredients are often added to the flour-water mixture. These ingredients may be the source of an additional microbial inoculum and/or serve as (co-)substrates for fermentation. An example of the former is the addition of yoghurt; an example of the latter is the use of fruit juices. The survival of microorganisms transferred from the ingredients to the fermenting flour-water mixture depends on the competitiveness toward particular strains of the microbial species present under the harsh conditions of the sourdough ecosystem. Their survival and growth is also determined by the presence of the appropriate substrates, whether or not carried over by the ingredients added.
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Affiliation(s)
- Luc De Vuyst
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Andrea Comasio
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Simon Van Kerrebroeck
- Research Group of Industrial Microbiology and Food Biotechnology (IMDO), Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel (VUB), Brussels, Belgium
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28
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Hu W, Yang X, Ji Y, Guan Y. Effect of starter cultures mixed with different autochthonous lactic acid bacteria on microbial, metabolome and sensory properties of Chinese northeast sauerkraut. Food Res Int 2021; 148:110605. [PMID: 34507749 DOI: 10.1016/j.foodres.2021.110605] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 07/09/2021] [Accepted: 07/11/2021] [Indexed: 01/09/2023]
Abstract
Effects of mixed cultures composed of any two of four autochthonous lactic acid bacteria on fermentation of Chinese northeast sauerkraut were investigated in this study. Results indicated that different mixed cultures inoculation generated diversified physicochemical, microbiological and flavor quality of sauerkraut. Compared to spontaneous fermentation, mix-culture fermentation showed significant higher population of lactic acid bacteria and lower amounts of undesirable microorganisms. Free amino acids increased by 2- to 5-fold from initial level in spontaneous and mix-culture fermentation, with the lowest production by spontaneous fermentation. Moreover, mix-culture fermentation promoted the flavor formation based on the analysis of HS-SPME/GC-MS, E-nose, E-tongue and sensory evaluation, especially for the mixed culture of Leu. mesenteroides and L. plantarum. These results highlighted that using a mixed culture made up with Leu. mesenteroides and L. plantarum could be a potential way to improve the quality of sauerkraut, which could provide an alternative way to meet consumers' requirement.
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Affiliation(s)
- Wenzhong Hu
- School of Pharmacy and Food Science, Zhuhai College of Jilin University, Zhuhai 519041, China; Department of Food Engineering, College of Life Science, Dalian Minzu University, Dalian 116600, China; Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China.
| | - Xiaozhe Yang
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China; School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yaru Ji
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China; School of Bioengineering, Dalian University of Technology, Dalian 116024, China
| | - Yuge Guan
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian 116600, China; School of Bioengineering, Dalian University of Technology, Dalian 116024, China
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29
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Canesin MR, Cazarin CBB. Nutritional quality and nutrient bioaccessibility in sourdough bread. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2021.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Cai H, Dumba T, Sheng Y, Li J, Lu Q, Liu C, Cai C, Feng F, Zhao M. Microbial diversity and chemical property analyses of sufu products with different producing regions and dressing flavors. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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31
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Wang Y, Wu J, Lv M, Shao Z, Hungwe M, Wang J, Bai X, Xie J, Wang Y, Geng W. Metabolism Characteristics of Lactic Acid Bacteria and the Expanding Applications in Food Industry. Front Bioeng Biotechnol 2021; 9:612285. [PMID: 34055755 PMCID: PMC8149962 DOI: 10.3389/fbioe.2021.612285] [Citation(s) in RCA: 147] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 04/16/2021] [Indexed: 12/31/2022] Open
Abstract
Lactic acid bacteria are a kind of microorganisms that can ferment carbohydrates to produce lactic acid, and are currently widely used in the fermented food industry. In recent years, with the excellent role of lactic acid bacteria in the food industry and probiotic functions, their microbial metabolic characteristics have also attracted more attention. Lactic acid bacteria can decompose macromolecular substances in food, including degradation of indigestible polysaccharides and transformation of undesirable flavor substances. Meanwhile, they can also produce a variety of products including short-chain fatty acids, amines, bacteriocins, vitamins and exopolysaccharides during metabolism. Based on the above-mentioned metabolic characteristics, lactic acid bacteria have shown a variety of expanded applications in the food industry. On the one hand, they are used to improve the flavor of fermented foods, increase the nutrition of foods, reduce harmful substances, increase shelf life, and so on. On the other hand, they can be used as probiotics to promote health in the body. This article reviews and prospects the important metabolites in the expanded application of lactic acid bacteria from the perspective of bioengineering and biotechnology.
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Affiliation(s)
- Yaqi Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Jiangtao Wu
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Mengxin Lv
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Zhen Shao
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Meluleki Hungwe
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Jinju Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Xiaojia Bai
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Jingli Xie
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Yanping Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Weitao Geng
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
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32
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Qiu X, Zhang Y, Zhou Y, Li GH, Feng XS. Progress in pretreatment and analysis of organic Acids: An update since 2010. Food Chem 2021; 360:129977. [PMID: 34023712 DOI: 10.1016/j.foodchem.2021.129977] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Organic acids, as an important component of food, have great influence on the flavor, texture, freshness of food. By lowering the pH of food to bacteriostatic acidity, organic acids are also used as additives and preservatives. Because organic acids are crucial to predict and evaluate food maturity, production and quality control, the rapid and sensitive determination methods of organic acids are necessary. This review aims to summarize and update the progress of the determination of organic acids in food samples. Pretreatment methods include simple steps (e.g., "dilute and shoot," protein precipitation, filtration, and centrifugation) and advanced microextraction methods (e.g., hollow fiber liquid phase microextraction, stir bar sorptive extraction and dispersive micro-solid phase extraction). Advances in novel materials (nanomaterial), solvents (ionic liquids and supercritical fluids) and hybrid methods are clearly displayed in detail. Continuous progress which has been made in electrochemical method, two-dimensional chromatography, high resolution mass is thoroughly illustrated.
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Affiliation(s)
- Xin Qiu
- School of Pharmacy, China Medical University, Shenyang 110122, China
| | - Yuan Zhang
- School of Pharmacy, China Medical University, Shenyang 110122, China
| | - Yu Zhou
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021 China
| | - Guo-Hui Li
- Department of Pharmacy, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021 China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University, Shenyang 110122, China.
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33
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Farahmand E, Razavi SH, Mohtasebi SS. Investigating effective variables to produce desirable aroma in sourdough using e‐nose and sensory panel. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Elham Farahmand
- Bioprocess Engineering Laboratory (BPEL), Department of Food Science, Engineering and Technology, Faculty of Agricultural Engineering and Technology University of Tehran Karaj Iran
| | - Seyed Hadi Razavi
- Bioprocess Engineering Laboratory (BPEL), Department of Food Science, Engineering and Technology, Faculty of Agricultural Engineering and Technology University of Tehran Karaj Iran
| | - Seyed Saeid Mohtasebi
- Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology University of Tehran Karaj Iran
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34
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Recent research advances of lactic acid bacteria in sourdough: origin, diversity, and function. Curr Opin Food Sci 2021. [DOI: 10.1016/j.cofs.2020.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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35
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Comparison of northeast sauerkraut fermentation between single lactic acid bacteria strains and traditional fermentation. Food Res Int 2020; 137:109553. [DOI: 10.1016/j.foodres.2020.109553] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/10/2020] [Accepted: 07/11/2020] [Indexed: 12/18/2022]
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36
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Dynamics of microbial community and changes of metabolites during production of type Ι sourdough steamed bread made by retarded sponge-dough method. Food Chem 2020; 330:127316. [DOI: 10.1016/j.foodchem.2020.127316] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/20/2020] [Accepted: 06/09/2020] [Indexed: 12/23/2022]
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37
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Falasconi I, Fontana A, Patrone V, Rebecchi A, Duserm Garrido G, Principato L, Callegari ML, Spigno G, Morelli L. Genome-Assisted Characterization of Lactobacillus fermentum, Weissella cibaria, and Weissella confusa Strains Isolated from Sorghum as Starters for Sourdough Fermentation. Microorganisms 2020; 8:E1388. [PMID: 32927810 PMCID: PMC7565839 DOI: 10.3390/microorganisms8091388] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/08/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022] Open
Abstract
Sourdough fermentation of bakery products is a well-established and widespread technique to confer an added value to the resulting food. In recent decades, gluten-free raw materials have gained more attention due to the diffusion of food disorders such as coeliac disease, but, at the same time, they present difficult manipulation and scarce technological properties because of the absence of gluten. For this reason, the present work was aimed at selecting starter cultures for sourdough application that are isolated from fermentation of sorghum flour. Three isolates of Lactobacillus fermentum, Weissella cibaria, and Weissella confusa were selected for the following properties: exopolysaccharide synthesis, acidification, CO2 production, and amylase activity. The investigated phenotypic characteristics were confirmed by genomic analyses, which also highlighted other potentially beneficial features for use in bakery products employment. These strains, together with bakery yeast, were used for bread preparation using sorghum and wheat flour and after 24 h of fermentation the resulting dough was analyzed to assess the improvement of its characteristics. The presence of lactic acid bacteria (LAB) had a great impact on the final dough, and the best preparation, from a rheological point of view, resulted in one made of sorghum and wheat flour with added LAB and bakery yeast, whose resulting characteristics were similar to all wheat flour doughs. The results of this study suggest a potential application of the selected starters in sorghum composite bread and should be validated with data from large-scale pilot tests conducted in industrial bakeries.
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Affiliation(s)
- Irene Falasconi
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Alessandra Fontana
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Vania Patrone
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Annalisa Rebecchi
- Biotechnological Research Centre, Università Cattolica del Sacro Cuore, 26100 Cremona, Italy; (A.R.); (M.L.C.)
| | - Guillermo Duserm Garrido
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Laura Principato
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Maria Luisa Callegari
- Biotechnological Research Centre, Università Cattolica del Sacro Cuore, 26100 Cremona, Italy; (A.R.); (M.L.C.)
| | - Giorgia Spigno
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
| | - Lorenzo Morelli
- Department for Sustainable Food Process (DiSTAS), Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (I.F.); (A.F.); (G.D.G.); (L.P.); (G.S.); (L.M.)
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Yeast-Free Doughs by Zymomonas mobilis: Evaluation of Technological and Fermentation Performances by Using a Metabolomic Approach. Microorganisms 2020; 8:microorganisms8060792. [PMID: 32466402 PMCID: PMC7357046 DOI: 10.3390/microorganisms8060792] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 12/15/2022] Open
Abstract
This research focuses on the leavening performances and development of volatile compounds of three strains of Zymomonas mobilis in the production of yeast-free doughs. Z. mobilis DSM 3580, 424, and 473 were used in doughs supplemented with glucose and with or without NaCl. Z. mobilis produced about 10 mg ethanol/g dough, with maximum dough volumes (640–680 mL) being reached after 2 h leavening. NaCl addition postponed this parameter up to 6 h. Among organic acids, hexanoic acid resulted the highest produced compound; DSM 424 and 473 formed more propanoic, butanoic and pentanoic acid, being both negatively affected by NaCl. Esters were mainly discriminated on NaCl addition, with octanoic acid (DSM 3580), butanoic acid (DSM 424), and propanoic acid (DSM 473) ethyl esters as main components. DSM 3580 specifically produced 2-heptanal, DSM 424 2-hexadecenal, (E) and DSM 473 octanal, while DSM 424 and DSM 473 produced 2-butanone-4-hydroxy better than DSM 3580. Z. mobilis unique signatures were the production of nonanoic and undecanoic acids, 2-hexadecenal, (E), L(+)-tartaric acid diethyl ester and 3-decen-5-one, 4-methyl, (E). This outcome can pave the way for using Z. mobilis in baking goods, providing innovation possibilities in the area of yeast-free leavened products.
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Teleky BE, Martău AG, Ranga F, Chețan F, Vodnar DC. Exploitation of Lactic Acid Bacteria and Baker's Yeast as Single or Multiple Starter Cultures of Wheat Flour Dough Enriched with Soy Flour. Biomolecules 2020; 10:E778. [PMID: 32443391 PMCID: PMC7277752 DOI: 10.3390/biom10050778] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 02/07/2023] Open
Abstract
Sourdough fermentation presents several advantageous effects in bread making, like improved nutritional quality and increased shelf life. Three types of experiments aimed to evaluate comparatively the efficiency of two Lactobacillus (Lb.) strains, Lb. plantarum ATCC 8014 and Lb. casei ATCC 393, to metabolize different white wheat flour and soybeans flour combinations to compare their efficiency, together with/without Saccharomyces cerevisiae on sourdough fermentation. For this purpose, the viability, pH, organic acids, and secondary metabolites production were investigated, together with the dynamic rheological properties of the sourdough. During sourdough fermentation, LAB presented higher growth, and the pH decreased significantly from above pH 6 at 0 h to values under 4 at 24 h for each experiment. Co-cultures of LAB and yeast produced a higher quantity of lactic acid than single cultures, especially in sourdough enriched with soy-flour. In general, sourdoughs displayed a stable, elastic-like behavior, and the incorporation of soy-flour conferred higher elasticity in comparison with sourdoughs without soy-flour. The higher elasticity of sourdoughs enriched with soy-flour can be attributed to the fact that through frozen storage, soy proteins have better water holding capacity. In conclusion, sourdough supplemented with 10% soy-flour had better rheological properties, increased lactic, acetic, and citric acid production.
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Affiliation(s)
- Bernadette-Emőke Teleky
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania; (B.-E.T.); (A.G.M.)
| | - Adrian Gheorghe Martău
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania; (B.-E.T.); (A.G.M.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
| | - Floricuța Ranga
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
| | - Felicia Chețan
- Agricultural Research and Development Station Turda, str. Agriculturii, nr. 27, Turda, 401100 Jud. Cluj, Romania;
| | - Dan C. Vodnar
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania; (B.-E.T.); (A.G.M.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăștur 3-5, 400372 Cluj-Napoca, Romania;
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40
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Suo B, Nie W, Wang Y, Ma J, Xing X, Huang Z, Xu C, Li Z, Ai Z. Microbial diversity of fermented dough and volatile compounds in steamed bread prepared with traditional Chinese starters. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109350] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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41
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Păcularu-Burada B, Georgescu LA, Vasile MA, Rocha JM, Bahrim GE. Selection of Wild Lactic Acid Bacteria Strains as Promoters of Postbiotics in Gluten-Free Sourdoughs. Microorganisms 2020; 8:E643. [PMID: 32354104 PMCID: PMC7284720 DOI: 10.3390/microorganisms8050643] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/24/2020] [Accepted: 04/26/2020] [Indexed: 12/18/2022] Open
Abstract
The occurrence of inflammatory responses in humans is frequently associated with food intolerances and is likely to give rise to irritable bowel disease. The use of conventional or unconventional flours to produce gluten-free baking doughs brings important technological and nutritional challenges, and the use of the sourdough biotechnology has the potential to overcome such limitations. In addition, the typical metabolic transformations carried out by Lactic Acid Bacteria (LAB) can become an important biotechnological process for the nutritional fortification and functionalization of sourdoughs due to the resulting postbiotics. In such a context, this research work aimed at isolating and selecting new LAB strains that resort to a wide range of natural environments and food matrices to be ultimately employed as starter cultures in gluten-free sourdough fermentations. Nineteen LAB strains belonging to the genera of Lactobacillus, Leuconostoc, Pediococcus, and Streptococcus were isolated, and the selection criteria encompassed their acidification capacity in fermentations carried out on chickpea, quinoa, and buckwheat flour extracts; the capacity to produce exopolysaccharides (EPS); and the antimicrobial activity against food spoilage molds and bacteria. Moreover, the stability of the LAB metabolites after the fermentation of the gluten-free flour extracts submitted to thermal and acidic treatments was also assessed.
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Affiliation(s)
- Bogdan Păcularu-Burada
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Domneasca Street No. 111, 800201 Galati, Romania; (B.P.-B.); (L.A.G.); (M.A.V.)
| | - Luminița Anca Georgescu
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Domneasca Street No. 111, 800201 Galati, Romania; (B.P.-B.); (L.A.G.); (M.A.V.)
| | - Mihaela Aida Vasile
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Domneasca Street No. 111, 800201 Galati, Romania; (B.P.-B.); (L.A.G.); (M.A.V.)
| | - João Miguel Rocha
- REQUIMTE–Rede de Química e Tecnologia, Laboratório de Química Verde (LAQV), Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto (FCUP), Rua do Campo Alegre, s/n. P-4169-007 Porto, Portugal;
| | - Gabriela-Elena Bahrim
- Faculty of Food Science and Engineering, Dunărea de Jos University of Galati, Domneasca Street No. 111, 800201 Galati, Romania; (B.P.-B.); (L.A.G.); (M.A.V.)
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